File your Self Assessment tax return online

You can file your Self Assessment tax return online if you:

  • are self-employed
  • are not self-employed but you still send a tax return, for example because you receive income from renting out a property

This service is also available in Welsh (Cymraeg).

You can also use the online service to:

  • view returns you’ve made before
  • check your details
  • print your tax calculation

If you did not file a tax return last year

You must register for Self Assessment before using this service if:

  • you’re filing for the first time
  • you’ve sent a tax return in the past but did not send one last tax year

When you cannot file online

You cannot file a Self Assessment tax return online:

Use commercial software or download other forms instead.

If you’re sending a tax return for the 2017 to 2018 tax year or earlier, get forms from the National Archives.

Sign in to file your tax return

You’ll need to prove your identity using Government Gateway. You’ll be able to register for Government Gateway if you have not used it before.

You can no longer use GOV.UK Verify to prove your identity.

You do not have to complete your return in one go. You can save your entry and go back to it later if you need to.

Start now